Posture regulating chair



Aug. 15, 1933.

L. W. CONANT POSTURE REGULATING CHAIR Filed Sept. 9, 1 930 A TTORNE Y.

'Patented Aug. 15, 1933 v -mm..STA-TES P1ATENrfoFFicejf 1,922,413 .A Y fv'Pos'rURE REof ULA'rINGy CHAIR v Lawrence W.;Conant, High.Point, N-.,C., assignorv toj-Ko-Rect Posture Chairl Company,High Y, Point, N.` 0;,a Corporation A-of North Carolina Application september 9,1939'. serialNo. 480,749v ff s claims'. (o1. 155-158) This, inventionrelates toaposture regulating' chair and more ;espe'cially,- to a chairhaving meansfor adjusting'the back portion to suit the height of the occupant forprovidingy an all around oice chair adapted to be adjusted to suit theindividual requirements of the occupant, and is broadly classied as aposture regulating chair.

An object of my invention is to provide a chair in which the recliningor back portion can be regulated to suit therequirements 'of the-particular occupant of the chair. j

Another object of Vthe invention is to provide in a chair a lumbarYsupport 'which can be adjusted verticallywith relation tothe seat ofthechair and which can also be adjusted forwardly and rearwardly.

Some .of the objects of my invention having been stated otherobjects'will appear as the description proceeds, when taken inconnectionwith lthe accompanying-drawing, in which- Figure 1 is aperspective View of my chair; Figure 2 is a top plan view of the backrestj n Figure 3 is a side elevation of the structure looking at theleft hand end of Figure2;

In Figuresv lfto 3 inclusive I show my chair having leg members 101,102, 103 and 104 'which leg members have the braces 105, 106 and 107,

securing the same toeach othervand` the lower end of these leg portionshave secured thereon the tubular members 108, which nt over the low-`ver portion of the legs of 101 to 104 inclusive.

Slidably and adjustably mounted within the tubular members108 are theother tubular mem- 4bers 112. n v

The members 101 to 104 inclusive have the cross-pieces 116 securedthereto on which is secured a seat portion 121. v The post members 102and ,103 project up 4Q wardly at the rear of the` seat portion and thecross-piece 123 is secured'ther'eto and intermediate the seat portionandthey member 123, I`

secure a verticallyfadjustable member 125 having 5. a slot 126 thereinwith a bolt 127 piercing the "postmembers 102 and 103, with thethumb nut128 thereon for purposes of vertically adjusting the members 125 withrelation to the post members. The member 125 has a pin 125a which nslides in the vertically disposed slot 125D in each "of the posts 102and 103 to preventr swinging movement of members 125. Pivotally securedto each of the members 125 is va member 130 which has an arcuateA slot132 therein with a plurality of cavitiesv 133 in the upper edge there- Vvof which are 'adapted to meshjwith a pin 134 to the 'members' 1,30during adjustment.

`r'egulaten'the lposition of the members 130. The

pins 131 move in vertically disposed slots 136 in Y yThejrmembers 130..vhave the pins y upper .end thereof with-v the upwardly projecting'lug'141and to these pins 140 are pivotally secured-the members 142rwhich are secured tothe backrest portion 143 which is padded as at 144.These members 142 have the overhanging lips 145 which project over themembers 130 and fall within ythe path of the lugs 141 so as'to preventthe back rest portion 143 from falling too far forward and downwardbut'allowing the same vto be raised upwardly.

In the drawing and specication I Vhave setV forth a preferred embodimentof my invention,

' and' although specific-terms are employed, they are used ina genericand descriptive sense only,

and not forpurposes of limitation, the scope of 'the invention being setforth in the appended` claims. 1 y

I claim:

. k1. In a chair vhaving back'postsy projecting Yabovelthe seatportion,l each post havinga vern tically extending slot therein, abracket having Veach of said brackets, each of said upwardlyprojectingvV members having an arcuately disposed l toothed slottherein, a pin on each of said brackets and projecting.intosaidtoothedslotf'or engagement with the teeth in said toothedjslot to Y hold 1 theupwardly projecting member in adjusted position, and alumbar 'supportpivotally secured at its ends'yto the upper ends of 4said upwardlyprojecting members. Y l I 2.' In a chair having the rear posts extendingabove the -seatportion of the, chair, a bracket member securedforvertical adjustment along and loosely securedat its lower end to saidvbracket and having an arcuate toothed slot therein, aVv pin on thebracket projecting into Vsaid. toothed therein, a bracketsecured to eachpost and having a portion extending into 'said slot, meansl foradjustably securing the bracket to said post, each in the' SO- f ooiVVeach post, an upwardly projecting armslidably TLG@ of said bracketshaving upper and lower projecting pins thereon,l an arm slidablysecuredto each slot therein, the said upper pin projecting into said toothedslot, a lumbar support pivotally secured to the upper ends of said arms,the arms being adjustable by raising the same and swinging them to a newposition and then lowering said arms to cause the'upper pins to engagesaid toothed slot in a new position.

4. In a chair having back postswith vertically disposed grooves therein,a bracket having a portion projecting into each of said grooves. andmeans for adjusting said brackets along said grooves, an arm having apivotal connection at its lower end to each of said brackets,` said pivfetal connection comprising a pin in the bracket and a slot in said armsto permit vertical rnczlve-A ment of said arms, each of said arms havinga curved slot with a rack in one side thereof, a pin on each bracketprojecting into said last slot;

and a lumbar support pivotally secured at its ends to the upper ends ofsaid arms.

5. In a back rest for chairs, a lumbar Support, arms pivotall'yconnected to. each end of the sup,-

port, eaeh armhaving e vertically disposed. Slot.

in its lower end, each arm also having an arcuate Slet therein whosecenter is thelewer end 0f the vertically disposed slet, a reels dispesedalong the.

upper edge of each of the arcuate slots, a bracket mounted on each arm,pins in each bracket protruding through both of said slots, means foradjustably securing the brackets to the back of the chair, the arms andlumbar support being raisable as a unit for backward and forwardadjustment and lowerable to cause the pin in each arcuate slot to engageits rack to hold the arms and lumbar support in adjusted position.

6. In a chair having rear posts, a form-tting lumbar support, a pair ofarms pivotally connected to the ends of the support, a verticallydisposed Slot-n the lower end of each arm, a transversely disposedarcuate slot in each arm, a vertically adjustable bracket mounted oneach arm and each postl a pair of spaced pins in each bracket projectinginto the set of slots in each bracket, one edge of Veach of the arcuateslotsA I 15o'y

